ARM: dts: change SROM node compatible from generic to model specific

This patch changes SROM nodes compatible from generic to model specific
to match with binding documentation. Also updating property
"samsung,srom-page-mode" as it is not defined as bool instead of int

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>